I have web server with nginx, php-fpm(php 5.3.8) on fedora 16. I have installed xapian from yum base repository (yum install php-xapian), everythigs went ok. But after adding extension=xapian.so to my php.ini file and restarting php-fpm, xapian. so doesn't load. After typing php -m in command line i can see error message :"PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/xapian.so' - /usr/lib64/php/modules/xapian.so: undefined symbol: zend_error_noreturn in Unknown on line 0" After thar i've remove xapian installed with yum and compile the newest version from source. Compiling didnt resolve my problem and I'm still getting message error trying load xapian module.